Expert Help with Data Distribution Questions and Answers

Explain the additional measure of central tendency would be appropriate to report with these data based on their findings.

glasskerfu 2021-09-29

To determine and explain: Which data entries are unusual and very unusual.
Given info:
The mean speed and standard deviation for a sample of vehicles along a stretch of highway are 67 miles per hour and 4 miles per hour, respectively. Also, the speeds for eight vehicles are as follows:
70,78,62,71,65,76,82,64

Wierzycaz 2021-09-29

1) What does a z-score indicate?
2) What are the three major uses of z-scores with individuals scores?

sagnuhh 2021-09-28

A privately owned liquor store operates both a drive-in facility and a walk-in facility.
On a randomly selected day, let X and Y, respectively, be the proportions of the time that the drive-in and walk-in facilities are in use, and suppose that the joint density function of these variables is
$f (x, y) = {\begin{cases} \frac{2}{3} (x + 2 y) & 0 \leq 1.0 \leq y \leq 1 \\ 0, & e l s e w h e r e \end{cases}$
0, elsewhere.
a. Find the marginal density of X.
b. Find the marginal density of Y.
c. Find the probability that the drive-in facility is busy less than one-half of the time.

Haven 2021-09-26

Do most researchers still insist on at least interval level of measurement as a condition for the use of parametric statistics?

glamrockqueen7 2021-09-24

Whether the statement is true or false "There is not one particular frequency distribution that is correct, but there are frequency distributions that are less desirable than others."

tricotasu 2021-09-24

ACTIVITY G: Continuous Probability Distributions
1. The data records the length of stay of engineering students in the university. We will assume a uniform distribution between 5 to 7 years, inclusive. What is the probability that a randomly chosen engineering student will stay at most 6 years?

iohanetc 2021-09-24

a. Organize costs as an ordered array.
b. Construct the frequency distribution and percentage distribution for the given data.
c. Explain that the basketball game is concentrated around which class group.

Nannie Mack 2021-09-22

Whille comparing two distributions, the reason why it is best to use relative frequency histograms rather than frequency histogram.

Sinead Mcgee 2021-09-21

Copperhead and Tiger Snakes. S. Fearn et al. compare two types of snakes in the article “Body Size and Trophic Divergence of Two Large Sympatric Elapic Snakes in Tasmania” (Australian Journal of Zoology, Vol. 60, No. 3, pp. 159-165). Tiger snakes and lowland copperheads are both large snakes confined to the cooler parts of Tasmania. The weights of the male lowland copperhead in Tasmania have a mean of 812.07 g and a standard deviation of 330.24 g; the weights of the male tiger snake in Tasmania have a mean of 743.65 g and a standard deviation of 336.36 g.
a. Determine the z-scores for both a male lowland copperhead snake and a male tiger snake whose weights are 850 g.
b. Under what conditions would it be reasonable to use z-scores to compare the relative standings of the weights of the two snakes?
c. Assuming that a comparison using z-scores is legitimate, relative to the other snakes of its type, which snake is heavier?

slaggingV 2021-09-20

The following problem
1. If X and Y's combined probability distribution is given by
$f (x, y) = \frac{x + y}{30}$ for $x = 0, 2, 3$ ; $y = 0, 1, 2$
Find
a. $P (X \leq 2, Y = 1)$
b. $P (X > 2, Y \leq 1)$
c. $P (X > Y)$

Albarellak 2021-09-20

Kruskal-Wallis test is a generalization of Mann-Whitney test for more than two independent sample
Select one:
True
False

rocedwrp 2021-09-18

Is $E (X^{2})$ equal to ${(E (X))}^{2}$ ?

necessaryh 2021-09-17

The measures which give you the spread of the data values are
a. Measures of location
b. Measures of dispersion
c. Measures of central tendency
d. Measures of percentiles.

floymdiT 2021-09-15

The following 2 sets of data represent test scores in a morning and afternoon section of a math class.
Each of these sections has 15 students, whose test scores are given below
morning
63, 74, 71, 54, 70, 83, 57, 78, 91, 84, 93, 73, 85, 87, 76
afternoon
63, 79, 93, 88, 76, 85, 98, 66, 88, 74, 64, 89, 99, 95, 83
Construct a back-to-back stem-leaf plot to represent the distribution of the test scores for the morning and the afternoon classes.

Armorikam 2021-09-15

1. Explain the value that represents the midpoint of the distribution.
2. Explain the value that represents the balance point of a distribution.
3. Explain the value that represents the zero point of a distribution.

vazelinahS 2021-09-15

Explain about of the measure of central tendency that is most appropriate for these data.

Tabansi 2021-09-14

A.C. Neilsen reported that children between the ages of 2 and 5 watch an average of 25 hours of television per week. Assume the amount watched by a randomly selected child is normally distributed and the standard deviation is 3 hours. If 20 children between the ages of 2 and 5 are randomly selected, find the standard error of the average number of hours watched by them in the sample.

aortiH 2021-06-06

For the following exercises, enter the data from each table into a graphing calculator and graph the resulting scatter plots. Determine whether the data from the table could represent a function that is linear, exponential, or logarithmic. $\begin{array}{ccccccccc} x & 4 & 5 & 6 & 7 & 8 & 9 & 10 & 11 & 12 & 13 \\ f (x) & 9.429 & 9.972 & 10.415 & 10.79 & 11.115 & 11.401 & 11.657 & 11.889 & 12.101 & 12.295 \end{array}$

pedzenekO 2021-05-16

For the following exercises, enter the data from each table into a graphing calculator and graph the resulting scatter plots. Determine whether the data from the table would likely represent a function that is linear, exponential, or logarithmic. $\begin{array}{cc} x & 0.5 & 1 & 3 & 5 & 7 & 10 & 12 & 13 & 15 & 17 & 20 \\ f (x) & 18.05 & 17 & 15.33 & 14.55 & 4.04 & 13.5 & 13.22 & 13.1 & 12.88 & 12.69 & 12.45 \end{array}$

As data distributions tasks can take various shapes and forms, always start with statistical reports as these may help you to find the answers that you require. See data distribution examples next to learn about the most suitable methodology for your particular case. There may be equations and a list of assumptions that are usually presented as word problems. If you have one in your school's textbook, compare it with the questions below and look for similarities. Since we are dealing with probability, do not forget to look into practice C Data distributions answers.

High school statistics